Clamp-bolt



E. J. RUQUET, JR.

CLAMP BOLT.

APPLICATION FILED APR. 18, 1919.

1,343,@89; Patented June 8, 1920.

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lazy-2o 2 & g\\ i INVENTOR 1 1 w fm T 25 ATTORNEYS E. J. RUQUET, JR.

CLAMP BOLT.

APPLICATION FILED APR. 18.1919.

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Patented June 8, 1920.

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A TTORNEYS EDWARD J. RUQUET, JR., OF NEW YORK, N. Y.

CLAMP-BOLT.

Application filed April 18,

To all whom it may concern.

Be it known that I, EDWARD J. RU UET, Jr., a citizen of the United States, and a resident of NeweYork city, Rosebank, borough of Richmond, county of Richmond, and State of New York, have invented a new and Improved Clamp-Bolt, of which the following is a full, clear, and exact description.

This invention relates to a new form of bolt. More particularly it relates to a clamp bolt for temporary use in holding material together. In ship and bridge building and in other constructional enterprises it is often necessary to employ temporary means for holding plates and other materials together while the permanent rivets and bolts are being driven.

It is, therefore, a purpose of my invention to provide a temporary bolt clamp capable of joining together firmly two pieces of material. My invention comprises abolt embodying clamping means which may be inserted in registering holes of the material to be clamped together. This clamp bolt is convenient and simple in its application and use, and is very quick to apply and remove.

A broad purpose of the invention is to provide a form of slotted pin fitted with clamp means, the whole of which may be inserted through the hole formed in the ship plates to be temporarily bolted together.

Finally, it is an object of my invention to provide a form of clamp bolt device enibodying the above utility characteristics which will be comparatively inexpensive to manufacture and positive in its application and use.

lVith the above and other objects in view the invention has relation to a certain combination and arrangement of parts, an example of which is described in the following specification, pointed out in the appended. claims and illustrated in the accompanying drawings, wherein:

Figure 1 illustrates the initial application of the clamp bolt to plates for securing same together, and shows partial assembly of the parts prior to the finalclamping action. This view is made in section.

Fig. 2 illustrates a sectional view of the clamp bolt in its completed applicaton to the plates showing same in clamped and fixedly secured relation.

Specification of Letters Patent.

Patented June 8, 1920.

1219. Serial No. 290,944.

Fig. 8 shows a sectional view through plates to be secured together, the view being taken from the side of Fig. 1 and Fig. 2.

Fig. 1 illustrates asectional view taken upon the line 44 of Fig. 1.

Fig. 5 shows the application of the clamp bolt with a clamp bar applied thereto, the clamp bar placing the bolts and plate under compression for finally securing the plates together.

Fig. 6 shows a perspective view of a clamp guide member adapted to guide the clamping parts into position and clamp plates together. 7

Fig. 7 shows a perspective view of a clamp strut used in maintaining certain parts in fixed relationship.

Fig. 8 shows a perspective view of a slotted pin used in this device.

Fig. 9 shows one of a pair of key clamps used in this clamp bolt.

Fig. 10 illustrates a spreader key em ployed for spreading the key clamps into service position.

Fig. 11 illustrates a modified design of the clamp bolt.

Fig. 12 shows a perspective view of a form of wedge member used in connection with the modified design of the invention.

Referring now more in particular to the drawings, wherein the same reference characters are used to designate the same parts throughout the several views, the numeral 1 points out a clamp guide provided with a conical shaped bore 2. Grooves 3 are formed in the conical bore. The surface or walls 3 comprising the groove extend parallel one with the other. On'the underside of the clamp guide is formed arcuate projections or shoulders 5, which, as later seen, will function as a cam. Set screw holes 6 are tapped into opposite faces of the clamp guide and communicate with the grooves formed in the bore. The upper and lower surfaces of the clamp guide will be finished parallel one with the other adapting it to fit properly with the associate parts of this clamp bolt.

A clamp strut comprising a base 8 integrally formed with a vertical supporting strut or post 9 fitted with an integral head 10 is employed in this clamp bolt. The inner face 11 is formed perpendicular to the plane of the base 8, and the outer face is serrated or knurled as indicated by 12. This element just described is one of a pair r guide and guided into position by the clamp 7 adapted to be disposed in the slots 3 of the clamp base such that the adjacent vertical.

bers 141 formed by cutting a slot through the body of the pin is provided and adapted to be inserted through the bore of the clamp struts. This slotted pin is provided with double cam faces 16 integrally formed with the members 14. Rectangular heads 17 are integrally formed on the free ends of the pin members.

A spreader key comprising a bar 19 square in cross-section and integrally formed with a head 20, which head has securedthereto a lifting handle 21, is provided for cooperating with the assembled device, the function of'which is to force certain members into service posltion. j

Apair of key clamps 1s employed in this device. These keys comprise a bar of material 23 square in cross-section and integrally formed with down-turned ends 24: forming a head on one end of the bar. The other end of the bar is curved as indicated by the numeral 25. This provides a cam face 26 formed on the curved end of the bar. Referring now more in particular to the assembly views of the drawing, I have heretofore described the relative position of the parts in the several views. The reference characters A and B designate two plates of material to be fastened together. This material may comprise ship-plates, bridge materials and others common in structural undertaking. The two plates to be temporarily secured together are provided with reg istering holes. 7 y

The clamp struts are applied to the face of one plate adjacent the hole formed therein, and the clamp guide placed in position upon the two struts. The struts will fit into the grooves 3 of the guide as heretofore described. Set screws 28 are screw-threaded into the bores of the guide and loosely set against the knurled faces of the clamp struts; The slotted pin will next be inserted and passed through bolt holes formed in the two plates, thus disposing the spreader cam 16 on. the opposite side of the material from the operator. The head 17 of the slotted pin will rest in contact upon the upper face of the clamp guide. The two'clamp keys will next be inserted by passing the curve or cam shaped ends though the open slot of the pin 14. The operator assembling the device will hold the two clamp keys in one hand and next insert the spreader key 19 by passing said key into the device between the adjacent faces of the key clamps.

This relative position of parts is illus- 3 and 5. The upper working face of the cam 30 fits the curved cam face of the clamp guide, while the lower arcuate face of the cam 30 is formed eccentric tothe upper face and works in contact against the plate A. By bringing pressure to bear downwardlyupon the handle 31, and. thus properly manipulating the cam 30,-this member can be made to slide under pressure beneath the clamp guide and lift all the parts into a very tight clamping relation against the plates A and B. This action lifts'the spreader cam-16 in forceful engagement with the key clamps thus spreading them outwardly against the hole walls of the plates. "Continued pressure exerted through the cam and bar will securely clamp the plates A and B between the base 8 and the curved ends of the key clamps. The set screws will next be tightened securely against the inclined and knurled face of the clamp struts, and the cam bar removed. The parts are now clamped in position as illustrated in Fig. 2. Any parting tendency of the' plates A and B will exert a downward pull upon the set screws. The inclined face of the clamp struts will prevent the clamp" guide and associate set screws from moving downwardly, and if any movement does take place will further tighten and more securely clamp together the parts.

This clamp bolt can be quickly and easily assembled in the hole, and removed thereholes of material to be fastened or clamped together and the key clamps placed in positionvso that any form of clamping means may be used. I have illustrated two forms of clamping means in the drawings, one form residing in the cam bar design and the other form residing in the driving wedge design at Fig. 11. It is obvious that many different forms of clamping or pressure means may be used for exerting pressure against the plates to be clamped, and I desire to include the various clamping methods which may be found suitable for use in connection with my form of slotted pin.

Figs. 11 and 12 illustrate a modified form of the clamp bolt showing a simplified application of the device to clamp members A and 13 together in a tight relation.

In this modified application of the invention, the slotted pin 14 will be inserted into the hole formed in the plates A and B and the key clamps and spreader key inserted in the usual manner. A pair of bifurcated wedge-shaped members 40 will then be pushed into place between the plate A and the head 23 as illustrated in Fig. 11. The wedge-shaped members will straddle the clamp bolt assembly and will be driven into place one against the other causing the wedge-shaped surfaces to draw the clamp bolt upwardly through the hole thus tightly clamping the two plate members A and B together.

This last described modified design of my invention may be used to great effect where there is no vibration evident in the structure to be erected. Where there is a considerable vibrational activity throughout the plates A and B or other structures it will be preferable to use the other form of clamp bolt as above described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent is:

1. A clamp bolt for temporary erection of structures comprising in combination, a clamp guide, a slotted pin inserted therein, key clamps fitting into the slotted pin, a spreader key for spreading the key clamps, and means for exerting lifting force on the key clamps.

2. A clamp bolt comprising in combination, a clamp guide, a slotted pin inserted therein, a cam integrally formed with the slotted pin, key clamps fitting into the slotted pin, a spreader key for spreading the key clamps, and means for exerting lifting force on the key clamps.

3. A clamp bolt comprising in combination, a clamp guide, a slotted pin inserted therein, a cam integrally formed with the slotted pin, key clamps fitting into the slotted pin, a spreader key for spreading the key clamps, means for exerting lifting force on the key clamps, and clamp screws provided to hold the parts in position after the lifting force has been removed.

4:. A clamp bolt comprising in combination, a pair of (damp struts, a clamp guide fitted upon the clamp struts, the said elements adapted to be mounted over registering holes-of materials to be fastened together, a pin passed through the clamp guide and through the registering holes, key clamps cooperating with the .pin, and a spreader key inserted between the key clamps adapted to spread the key clamps apart.

5. A clamp bolt for temporary erection of structures comprising in combination, a clamp guide provided with cam surfaces cut thereon and a bore with grooves, clamp struts inserted in the bore of the clamp guide and placed adjacent registering holes in the material to be secured together, a pin passed through the bore of clamp guide and through the hole of the material, a cam formed on the pin, and means passed through the bore and the holes for clamping the materials to be secured together.

6. A clamp bolt for temporary erection of structures comprising in combination, a clamp guide provided with cam surfaces cut thereon and a bore with grooves, clamp struts inserted in the bore of the clamp guide and placed adjacent registering holes in the material to be secured together, a pin passed through the bore of the clamp guide and through the hole of the material, means passed through the bore and the holes for clamping the materials to be secured together.

7. A clamp bolt for clamping material together comprising in combination, a clamp guide, cam faces formed on the clampguide, a pin carried by the clamp guide, a head formed on the pin and resting in contiguous relation upon the clamp guide, a cam formed on the pin, key clamps mounted in the clamp guide, and cam faces formed on one end of the key clamps and adapted to engage the cam of the pin.

8. A clamp bolt for clamping material together comprising in combination, a slotten pin member, a pair of bars with curved ends inserted in the slot of the pin memher and adapted to engage material to be clamped together, and means for drawing the slotted pin member and the bars tightly against the material to be clamped.

9. A clamp bolt for clamping material together where the material has a hole formed therein comprising in combination, a pin adapted to be passed through the hole formed in the material, a head formed on the pin, means to cooperate with the pin and adapted to engage the material to be clamped, and a wedge capable of being inserted between the head and the material to be clamped for drawing the device into clamped engagement with the material to be clamped.

10. A clamp bolt for holding material together comprising in combination, a slotted pin, a pairof key clamps, a spreader key, a head formed on the slotted pin, and a wedge inserted between the head and material to be clamped for drawing the slotted pin With the key clamps into clamping engagement With the material to be secured together.

11. A device of the character described for insertion in a hole formed in a plate or other material, comprising in combination a pin consisting oftwo parallel spaced bars,

a cam integrally formed at theend of the bars and a pairof spreader keys, cams 10 formed on one end of the-spreader keys adapted to cooperate with the aforesaid cam. faces of the pin member and adapted to Wedge against the plate or material through which the device is inserted.

EDWARD J. RUQUET, JR. 

